// Copyright (c) 2021-2024 SigScalr, Inc.
//
// This file is part of SigLens Observability Solution
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package utils

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func Test_Iterator_empty(t *testing.T) {
	iter := NewIterator([]int{})

	_, ok := iter.Next()
	assert.False(t, ok)
}

func Test_Iterator(t *testing.T) {
	slice := []int{42, 100}
	iter := NewIterator(slice)

	value, ok := iter.Next()
	assert.True(t, ok)
	assert.Equal(t, 42, value)

	value, ok = iter.Next()
	assert.True(t, ok)
	assert.Equal(t, 100, value)

	_, ok = iter.Next()
	assert.False(t, ok)
}
